Tesis sobre el tema "Thermal energy demand forecast"
Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros
Consulte los 50 mejores tesis para su investigación sobre el tema "Thermal energy demand forecast".
Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.
También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.
Explore tesis sobre una amplia variedad de disciplinas y organice su bibliografía correctamente.
Thomas, Arthur. "The Econometrics of Energy Demand : identification and Forecast". Thesis, Nantes, 2020. http://www.theses.fr/2020NANT3021.
Texto completoThe prevention of climate change is one of the priorities of the world energy policy that aims to massively reduce greenhouse gas emissions. Faced with these challenges, it is striking to note that our knowledge of energy demand modeling remains limited because it is largely based on old empirical work and methodologies that are now dated. Therefore, the objective of our work is twofold. First, we analyze quantitatively the economic determinants of energy demand. Second, we develop new forecasting models. This thesis is structured in four chapters. The first chapter shows that natural gas consumption in France can be predicted using a simple model which only includes public information that is available to market's participants. This chapter proves the existence of a long-term relationship between demand and prices of other energies and provides estimates of their marginal impacts on observed demand levels. The second chapter empirically investigates the role of temperature in forecasting gas prices in the US. It develops a methodology to build a new monthly index based on temperature. This index captures variations in residual demand for natural gas in real time. It is used as an additional exogenous variable in structural models (VAR) to improve forecasts and we show that, in our case, predictive models derived from a structural model are enhanced relying on true real-time (not subject to revisions) data. The third chapter proposes to use, in the case of oil market, a structural model capturing expectations in a noncausal VAR framework, and to properly identify the reactions of oil key variables to supply news shock. The fourth chapter revisits the predictive power of oil and gas convenience yield by incorporating expectations into an empirical specification through non-causal VAR based on the theory of storage which delivers very competitive price predictions in a simple bivariate setting
MENDES, EVANDRO LUIZ. "INTERVENTION MODELS TO FORECAST MONTHLY DEMAND OF ELETRIC ENERGY, CONSIDERING THE RATIONING SCENERY". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2002. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=3336@1.
Texto completoNesta dissertação é desenvolvida uma metodologia para previsão de demanda mensal de energia elétrica considerando cenários de racionamento. A metodologia usada consiste em, a partir das taxas de crescimento da série temporal, identificar e eliminar os efeitos do racionamento de energia elétrica através da aplicação de Modelos Lineares Dinâmicos. São analisadas também estruturas de intervenção nos modelos estatísticos de Box & Jenkins e Holt & Winters. Os modelos são então comparados segundo alguns critérios, basicamente no que tange à sua eficiência preditiva. Conclui-se ao final sobre a eficiência da metodologia proposta, dado a grande dificuldade para solucionar o problema a partir dos modelos estatísticos de Box & Jenkins e Holt & Winters. Esta solução é então proposta como a mais viável para criar cenários de racionamento e pósracionamento de energia para ser utilizado por agentes do sistema elétrico nacional.
In this dissertation, a methodology is developed to forecast monthly demand of electric energy, considering the rationing scenery. The methodology is based on, taking the growth rate from the time series, identify and eliminate the effects of electric energy rationing, using Dynamic Linear Models. It is also analyzed intervention structures in the statistics models of Box & Jenkins and Holt & Winters. The models are compared according to some criterions, mainly forecast accuracy. At the end, we concluded that the methodology proposed is more efficient, due to the difficult to solve the problem using the statistics models with intervention. This solution is proposed as the best among them to create scenery during the energy rationing and after energy rationing, to be used by the national electric system agents.
Zhao, Zhiheng. "Thermal Inertia In Residential Buildings For Demand Response". Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/16018.
Texto completoCowan, David. "Understanding and modelling thermal energy demand and emissions in urban environments". Thesis, London South Bank University, 2017. http://researchopen.lsbu.ac.uk/1863/.
Texto completoWang, Hao. "Numerical study of cooling demand and thermal performance for different wall constructions". Thesis, Högskolan i Gävle, Avdelningen för bygg- energi- och miljöteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-19175.
Texto completoSivabavanandan, Sivalingam. "Thermal energy storage application for load shifting and electrical demand management in Saudi Arabia". Thesis, Kingston University, 2005. http://eprints.kingston.ac.uk/35780/.
Texto completoHøseggen, Rasmus Z. "Dynamic use of the building structure - energy performance and thermal environment". Doctoral thesis, Norwegian University of Science and Technology, Department of Energy and Process Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-1998.
Texto completoThe main objectives of this thesis have been to evaluate how, under which premises, and to what extent building thermal mass can contribute to reduce the net energy demand in office buildings. The thesis also assesses the potential thermal environmental benefits of utilizing thermal mass in office buildings, i.e. reduction of temperature peaks, reduction of temperature swings, and the reduction in the number of hours with excessive operative temperatures. This has been done by literature searches, and experimental and analytical assessments. This thesis mainly concerns office buildings in the Norwegian climate. However, the methods used and the results obtained from this work are transferable to other countries with similar climates and building codes.
Within the limitations of this thesis and based on the findings from all parts and papers this thesis comprises, it is shown that utilization of thermal mass in office buildings reduces the daytime peak temperature, reduces the diurnal temperature swing, decreases the number of hours with excessive temperatures, and increases the ability of a space to handle daytime heat loads. Exposed thermal mass also contributes to decrease the net cooling demand in buildings. However, thermal mass is found to have only a minor influence on the heating demand in office buildings.
The quantity of the achievements is dependent on the amount of exposed thermal mass, night ventilation strategy, and airflow rates. In addition, parameters such as set point temperatures, control ranges, occupancy patterns, daytime ventilation airflow rates, and prevailing convection regimes are influential for the achieved result. The importance of these parameters are quantified and discussed.
Hovedmålene med denne avhandlingen har vært å evaluere hvordan, under hvilke forutsetninger og i hvilken utstrekning termisk masse kan bidra til å redusere netto energibehov i kontorbygninger. Avhandlingen vurderer også hvilke potensielle fordeler termisk masse har for det termiske inneklimaet, dvs. reduksjon av maksimumstemperatur, temperatursvingninger og antall timer med overtemperaturer. Disse undersøkelsene er gjort gjennom søk i litteraturen, feltstudier og analytiske metoder. Avhandlingen omfatter i hovedsak kontorbygninger under norske forhold, men metodene og resultatene er overførbare til andre land med sammenlignbare klimatiske forhold og byggeskikk.
Innenfor avgrensningene gjort i avhandlingen og basert funnene i de ulike delene og artiklene avhandlingen består av, er det vist at utnyttelse av termisk masse i kontorbygg bidrar til å redusere netto energibehov. Termisk masse reduserer også maksimumstemperaturen dagtid, demper temperaturvariasjonene over døgnet og reduserer antall timer med overtemperaturer. Utnyttelse av termisk masse bidrar også til at rom kan tåle en høyere intern varmelast enn lette rom uten at dette går ut over den termiske komforten. Termisk masse har imidlertid liten betydning for energibehovet for oppvarming i kontorbygg.
Gevinsten med å utnytte termisk masse avhenger av tilgjengeligheten av eksponerte tunge materialer, strategi for nattventilasjon og ventilasjonsluftmengder. I tillegg innvirker parametere som settpunkttemperaturer, dødbånd og kontrollintervaller for ventilasjonen og bruksmønster. Innvirkningen av disse parametrene er diskutert og kvantifisert.
Olsson, Martin. "Thermal Shape Factor : The impact of the building shape and thermal properties on the heating energy demand in Swedish climates". Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-125076.
Texto completoKettenis, Christos. "Electrical supply and demand in Cyprus : optimal use of renewable energy sources in electricity production". Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/electrical-supply-and-demand-in-cyprus-optimal-use-of-renewable-energy-sources-in-electricity-production(3861cfcb-8a74-4087-a114-4e0dc9557202).html.
Texto completoMotuzienė, Violeta. "Complex analysis of the influence of glazing on energy demand of public buildings". Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20101228_125700-05528.
Texto completoDisertacijoje, taikant dinaminį pastatų energijos poreikių modeliavimą, nag-rinėjamos viešosios paskirties pastatų energinio efektyvumo problemos. Pagrin-dinis tyrimo objektas yra viešosios paskirties pastato fasado įstiklinimo įtaka energijos poreikiams. Greta savo pagrindinės funkcijos – pakankamo natūralaus apšvietimo užtikrinimo, fasado įstiklinimas privalo būti energiškai efektyvus. Tai prieštaringi reikalavimai. Pagrindinis disertacijos tikslas – įvertinant natūralaus apšvietimo poreikį, kompleksiškai išanalizuoti viešosios paskirties pastato įstiklinimo charakteristi-kų įtaką pastato mikroklimato ir apšvietimo sistemų energijos poreikiams bei nustatyti, kokioms pastato įstiklinimo charakteristikoms esant, Lietuvoje bei pa-našaus klimato šalyse pastato energijos poreikius galima būtų sumažinti iki ma-žai energijos vartojančio pastato lygio. Darbe sprendžiami du pagrindiniai užda-viniai: pirmasis – atliekama įstiklinimo įtakos kondicionuojamo pastato energijos poreikiams analizė; antrasis – nustatomos efektyvios energiškai efek-tyvaus pastato įstiklinimo charakteristikos. Disertaciją sudaro įvadas, keturi skyriai, rezultatų apibendrinimas, naudotos literatūros ir autoriaus publikacijų disertacijos tema sąrašai. Įvadiniame skyriuje aptariama tiriamoji problema, darbo aktualumas, apra-šomas tyrimų objektas, formuluojamas darbo tikslas bei uždaviniai, aprašoma tyrimų metodika, darbo mokslinis naujumas, darbo rezultatų praktinė reikšmė, ginamieji teiginiai, pristatomos... [toliau žr. visą tekstą]
Abedin, Joynal. "Thermal energy storage in residential buildings : a study of the benefits and impacts". Thesis, Loughborough University, 2017. https://dspace.lboro.ac.uk/2134/25520.
Texto completoFaccani, Alice. "Modeling and validation of the thermal behavior of buildings for the development of demand response methods". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/10651/.
Texto completoPragada, Gandhi y Nitish Perisetla. "Utility-Scale Solar Power Plants with Storage : Cost Comparison and Growth Forecast Analysis". Thesis, KTH, Skolan för industriell teknik och management (ITM), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-301838.
Texto completoFörnybar energi för energiproduktion, liksom Solar, visar sig vara mycket relevant i dagens värld [1]. Det är mycket tydligt att solenergi kommer att framstå som en av de viktigaste energikällorna i framtiden. Dessutom kommer lagringsalternativet att spela en väsentlig roll för den framtida distributionen av solkraftverk. Koncentrerade solkraftverk med värmelagring, solcellsanläggningar integrerade med batterilagring och hybridanläggningar är attraktiva lösningar för att få en stabil och skickbar energiproduktion. Investerare eller beslutsfattare brukar tycka att det är utmanande att komma på den mest genomförbara solcellstekniken eftersom de måste överväga teknikekonomisk genomförbarhet, och samtidigt, ur ett marknads- eller administrativt perspektiv också. Så denna avhandlingsstudie kommer att ta itu med nyckelproblemet som riktar sig till investerare eller beslutsfattare eftersom det finns ett behov av att välja den bästa solenergilagringstekniken på en användningsnivå i framtiden baserat på så många attribut. Avhandlingsprojektet genomfördes i två faser som inkluderar prognosmodellering och uppskattningar och teknikekonomisk bedömning av virtuella anläggningar. Dessa två faser hjälpte till att ta itu med olika frågor i samband med problemstudien i denna studie. Hela avhandlingsstudien omfattade i stort sju länder som sträcker sig över fyra stora regioner runt om i världen. Den första fasen i avhandlingen, prognosmodelleringsuppskattningar visar hur de sju länderna kommer att se ut i framtiden (2020 - 2050) med avseende på installerad kapacitet och kostnader för PV-, CSP- och BESS -teknik. Några viktiga resultat från fas 1 inkluderar, i lågkostnadsuppskattningar, att Kina kommer att vara marknadsledande inom PV och CSP år 2050. I USA och Indien beräknas de installerade kostnaderna för PV minska med 70% år 2050. Av 2050 beräknas de installerade kostnaderna för Solar Tower -teknik sjunka med cirka 65% i Kina och Spanien. I USA kommer priserna på BESS -teknik sannolikt att sjunka med cirka 58 - 60 % år 2050. I den andra fasen av avhandlingsstudien behandlade en teknikekonomisk utvärdering av virtuella anläggningar de aspekter som ska övervägas för ett solprojekt om det används i framtiden i sju specifika länder. Resultaten från denna analys hjälper investerare eller beslutsfattare att välja den billigaste solenergilagringstekniken på en användningsnivå i sju specifika länder i framtiden (2020 - 2050). Viktiga resultat från denna analys visar att i USA, år 2050, kommer PV+BESS att vara den billigaste lagringstekniken på 4 - 10 lagringstimmar. Tillägg av en annan förnybar teknik kommer att öka jämförbarheten. I Kina kommer Hybrid att vara den billigaste lagringstekniken i 4-8 timmar fram till 2050. Det finns en enorm potential för distribution av CSP & hybridanläggningar i framtiden än PV. I Sydafrika kommer CSP att vara den billigaste lagringstekniken år 2050 för 4 - 10 timmars lagring. Det antas att distributionen av BESS -projekt på verktygsnivå börjar från 2025 i Sydafrika. Utöver detta genomfördes marknadskravsanalys som ger insikter speciellt för beslutsfattarna om hur olika drivkrafter och begränsningar påverkar varje solteknik i de specifika länderna i framtiden. Sammantaget ger hela avhandlingsstudien riktlinjer/insikter till investerare eller beslutsfattare för att välja den bästa solenergitekniken i framtiden i en nyttoskala för ett visst land.
Geyser, Martinus Fredrik. "A new integrated procedure for energy audits and analyses of buildings / M.F. Geyser". Thesis, North-West University, 2003. http://hdl.handle.net/10394/414.
Texto completoThesis (Ph.D. (Mechanical Engineering))--North-West University, Potchefstroom Campus, 2004.
Joševski, Martina Verfasser], Dirk [Akademischer Betreuer] [Abel y Jakob Lukas [Akademischer Betreuer] Andert. "Predictive energy management of hybrid electric vehicles with uncertain torque demand forecast for on-road operation / Martina Joševski ; Dirk Abel, Jakob Lukas Andert". Aachen : Universitätsbibliothek der RWTH Aachen, 2018. http://d-nb.info/1189332698/34.
Texto completoElhashmi, Rodwan. "Comprehensive Study Toward Energy Opportunity for Buildings Considering Potentials for Using Geothermal and Predicting Chiller Demand". University of Dayton / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1589332482268134.
Texto completoManikonda, Nikhil. "Performance of Deep Geothermal Energy Systems". Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23219.
Texto completoGils, Hans Christian [Verfasser] y André [Akademischer Betreuer] Thess. "Balancing of intermittent renewable power generation by demand response and thermal energy storage / Hans Christian Gils. Betreuer: André Thess". Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2016. http://d-nb.info/1081367563/34.
Texto completoBaniasadi, Ali. "Application of heat pumps and thermal storage systems for improved control and performance of microgrids". Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2020. https://ro.ecu.edu.au/theses/2316.
Texto completoLumbier, Fernandez Mikel. "Alternative energy supply study for a cottage in Vifors". Thesis, Högskolan i Gävle, Energisystem, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-26714.
Texto completoRaillon, Loic. "Experimental identification of physical thermal models for demand response and performance evaluation". Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEI039.
Texto completoThe European Union strategy for achieving the climate targets, is to progressively increase the share of renewable energy in the energy mix and to use the energy more efficiently from production to final consumption. It requires to measure the energy performance of buildings and associated systems, independently of weather conditions and user behavior, to provide efficient and adapted retrofitting solutions. It also requires to known the energy demand to anticipate the energy production and storage (demand response). The estimation of building energy demand and the estimation of energy performance of buildings have a common scientific: the experimental identification of the physical model of the building’s intrinsic behavior. Grey box models, determined from first principles, and black box models, determined heuristically, can describe the same physical process. Relations between the physical and mathematical parameters exist if the black box structure is chosen such that it matches the physical ones. To find the best model representation, we propose to use, Monte Carlo simulations for analyzing the propagation of errors in the different model transformations, and factor prioritization, for ranking the parameters according to their influence. The obtained results show that identifying the parameters on the state-space representation is a better choice. Nonetheless, physical information determined from the estimated parameters, are reliable if the model structure is invertible and the data are informative enough. We show how an identifiable model structure can be chosen, especially thanks to profile likelihood. Experimental identification consists of three phases: model selection, identification and validation. These three phases are detailed on a real house experiment by using a frequentist and Bayesian framework. More specifically, we proposed an efficient Bayesian calibration to estimate the parameter posterior distributions, which allows to simulate by taking all the uncertainties into account, which is suitable for model predictive control. We have also studied the capabilities of sequential Monte Carlo methods for estimating simultaneously the states and parameters. An adaptation of the recursive prediction error method into a sequential Monte Carlo framework, is proposed and compared to a method from the literature. Sequential methods can be used to provide a first model fit and insights on the selected model structure while the data are collected. Afterwards, the first model fit can be refined if necessary, by using iterative methods with the batch of data
Simmons, Cody Ryan. "Proactive Energy Optimization in Residential Buildings with Weather and Market Forecasts". BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/7594.
Texto completoCIARROCCHI, ELEONORA. "Demand Side Management in the built environment by means of heat pumps". Doctoral thesis, Università Politecnica delle Marche, 2017. http://hdl.handle.net/11566/245458.
Texto completoDemand side management (DSM) consists in a set of practices and activities designed to affect the amount or timing of customers’ energy demand in order to use electricity more efficiently. DSM decreases the cost of meeting the customers' increasing energy demand by means of an investment in end-use energy efficiency and load management. As a result, this allows for an increased flexibility in the power generating systems and thus improving the energy supply balance in the network and reshaping the electricity market. DSM brings along a variety of advantages including the decrease of CO2 emissions and a development of a more efficient use of energy. Furthermore, DSM also allows for greater stability in the electricity prices for all market players. The load management is one of DSM objectives, this means changing the customers’ load profiles in a more efficient way. Among the broad variety of load shape profile combinations, Load Shifting and Peak Clipping are the most widely used demand patterns. This is mainly attributed to the fact that they are relatively quick and easy to perform without the requirement for a significantly advanced technology. Both demand patterns have been particularly researched in the presented works. Interesting opportunities come from the use of DSM strategies for the management of electric devices. A very promising combination is when the heat pumps operate according to DSM strategies, more precisely when load management is applied. Such a DSM strategy can be implemented by means of additional equipment that enables load shaping, among all, thermal energy storage (TES) is a valid tool. In DSM program, a TES can be used for electric load management in buildings by shifting electrical heating and cooling demands e.g. from peak periods to off peak periods. The application of TES in DSM can thus add flexibility to the energy management as shown in the various works considered in this study’s literature review. With respect to previous studies, the novelty of this work lies in the application of DSM real existing cases within the building sector which also integrate renewable energy sources into the system. Initially, reliable experimental data from realistic experimental campaigns was consulted. Subsequently, simulation models were built in order to closely represent the true behavior recorded in each of the studied experimental campaigns. The purpose of such simulation models was to study the integration of DSM strategies in the built environment and to analyze the effect of the thermal loads on the electricity consumption as well as the building energy performances in the long run. Results from this work confirm how DSM strategies can positively impact on the buildings’ and systems’ performances as they help increasing energy efficiency and system flexibility. Moreover, the application of DSM has proven to reduce the energy consumption of the presented cases and the electricity bills, particularly when dynamic electricity tariffs are implemented. The DSM measures turn out to be economically feasible when integrated with TES system which allows for the electric consumption demand to be shifted to time of cheaper electricity prices. This research study also illustrates how a TES system is not necessarily always the best solution in terms of energy consumption as it requires an initial charging and subsequent discharging, thus requesting energy to the whole system. However, such a measure helps smoothen out the overall electricity consumption patterns as it reduces the peak period electricity demand as it offsets such a demand to the off-peak period when cheaper tariffs are in operation. This research study demonstrates how a Chinese tariffs context can be successful for the TES application as the off-peak electricity tariff is considerable lower than the on peak tariff. Simple DSM measures are often enough to significantly improve energy efficiency. Furthermore, the building sector does not necessitate an extreme overturning if renewable energy or dynamic taxation are implemented.
ROMAGNOLI, ALESSANDRA. "Efficientamento energetico degli edifici: metodologie ed analisi dei componenti edilizi Energy retrofit: methodologies and analyses of building components". Doctoral thesis, Università Politecnica delle Marche, 2018. http://hdl.handle.net/11566/252560.
Texto completoThe object of this research project is the energy characterization of an urban district composed by two buildings for a total of 219 apartments. The complex, owned by the Ancona municipality, faces acute degradation and significant issues in terms of energy consumption, indoor comfort and healthiness. The main purpose is to analyze new strategies for the optimization of the building envelope and the technical systems to reduce the heating and cooling demand, based on the relevant energy directive (EED-2012/27 / UE) which provides a common framework of measures to promote the energy efficiency throughout the Union and progress towards the European 20-20-20 Targets. Over the three years of research, it has been ascertained that the assessment and the analysis of such buildings, even supported by monitoring campaigns, do not lead to any satisfactory results, given the number of variables at stake and the difficulty to strike causal links between on-site collected data and the building response. Consequently, along with simulation-based activities, specific solutions have been developed in the frame of potential retrofit strategies, energy efficient measures and modelling issues. Overall, three main topics have been addressed: thermal inertia and the way it impinges on indoor comfort; simulation of thermal bridges in semi steady state and dynamic regime; role of sunspaces as passive heating systems.
Psimopoulos, Emmanouil. "Smart control of PV and exhaust air heat pump systems in single-family buildings". Licentiate thesis, Uppsala University, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:du-32581.
Texto completoAbolghasemi, Moghaddam Saman. "The effects of low-emissivity window films on thermal comfort and energy performance of a historic stone building in cold climate: computer simulations with "IDA ICE"". Thesis, Högskolan i Gävle, Avdelningen för byggnadsteknik, energisystem och miljövetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-30145.
Texto completoHassanie, Samer. "A Systematic Approach to Integrated Building Performance Assessment and Visualisation". Licentiate thesis, KTH, Installations- och energisystem, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-192563.
Texto completoQC 20160916
Duran, Ozlem. "Evaluation of retrofitting strategies for post-war office buildings". Thesis, Loughborough University, 2018. https://dspace.lboro.ac.uk/2134/32268.
Texto completoAl-Hadban, Yehya. "Demand-side management in office buildings in Kuwait through an ice-storage assisted HVAC system with model predictive control". Thesis, Cranfield University, 2005. http://hdl.handle.net/1826/3885.
Texto completoBouraleh, Maryan. "Techno-economic Potential of Customer Flexibility : A Case Study". Thesis, KTH, Energiteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-278079.
Texto completoSe filen
Oehme, Sabina. "Demand flexibility potential from heat pumps in multi-family residential buildings". Thesis, Uppsala universitet, Fasta tillståndets fysik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-355135.
Texto completoYaser, Hussnain A. "Novel System Design For Residential Heating And Cooling Load Shift Using PCM Filled Plate Heat Exchanger And Auxiliaries For Economic Benefit And Demand Side Management". University of Cincinnati / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1397234246.
Texto completoKamal, Rajeev. "Optimization and Performance Study of Select Heating Ventilation and Air Conditioning Technologies for Commercial Buildings". Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/6656.
Texto completoGastaldello, Danilo Sinkiti. "Desenvolvimento de metodologia para previsão da demanda de energia elétrica residencial considerando aspectos socioeconômicos e ferramentas computacionais inteligentes". Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/3/3143/tde-04082017-151342/.
Texto completoThe need for energy has increased in the past years, thus requiring the design of new power plants. However, the project of such new constructions has been considerably neglected, mainly due to environment constraints. However, the whole government and companies are now focusing on a better management of the national energy grid. Despite that new policy, there is a need for a better knowledge concerning the user\'s behavior in order to present proposals that really take into account the consumers, since each them has the freedom to use the energy the way he wants to, as well as according to his socioeconomic habits. In this context, this thesis proposes to analyze the socioeconomic impacts of the energy consumption concerning residential consumers, being also developed an algorithm that generates virtual load curves based on statistical data from both IBGE and ANEEL. With that data on hand, the intelligent tools, e.g., Bayesian Networks and Optimum-Path Forest, were trained aiming at evaluating the possibility to create profiles for the further identification of their classes according to that information. The results obtained highlighted the importance of the socioeconomic information when evaluating the load curves, which should be part of the whole system. Another conclusion concerns the intelligent tools, which can be further used for consumer forecasting, as well as to create patterns related to the consumers\' profiles.
Ko, Hsin-Ting. "Techno-economic analysis of demand flexibility from heat pumps for multi-family buildings in Sweden based on two case studies". Thesis, KTH, Energiteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-272472.
Texto completoSverige genomgår en energitransformation för att bli en fossilfri ekonomi som siktar på att ha en elproduktion från 100% förnybara resurser år 2040. Sverige har också ett nationellt mål att ha en fossilfri fordonsflotta till 2030. Den ökande andelen av intermittenta förnybara resurser bidrar till ökning av obalans mellan produktion och efterfråga av elektricitet. Efterfrågeflexibilitet ger en lösning på problemet med obalanser i energisystemet där prosumenter kan reglera sin energiförbrukning. Efterfrågeflexibilitet kan vara fördelaktigt för kraft- och nätstabilitet. Elektriska värmepumpar kan agera som en stor flexibel last samtidigt som fastighetens termiska tröghet fungerar som värmeenergilagring. I denna avhandling utförs en teknisk-ekonomisk analys av efterfrågeflexibilitet från värmepumpar för två bostadshus beläget i centrala Örebro med hjälp av energisimuleringar av fastigheten. Genom denna avhandling syftar författaren på att höja intelligensen av de befintliga fastigheterna genom att undersöka storleken av den termiska trögheten som finns tillgänglig med avseende på olika värmescenario, byggnadsmaterial, ventilationssystem, väderförhållanden och användarbeteenden. Två flerfamiljshus, Klockarängsvägen och Pärllöken, väljs för jämförelse med avseende på den termisk tröghet som bidrar mest till efterfrågeflexibiliteten. De två utvalda fastigheterna använder värmepumpar för värme och varmvatten. Båda fastigheterna faktureras enligt effektabonnemang, vilket gör effektutjämning mer lönsamt. I det kallaste scenariot, när omgivningstemperaturen är -20°C, faller Pärllökens inomhustemperatur från 21°C till 19,1°C och Klockarängsvägens inomhustemperatur sjunker till 16,6°C om värmetillförseln stängs av i en timme. Under det lägsta börvärdet för inomhustemperatur på 18°C visar Pärllöken en maximal effektförskjutningskapacitet på 25 kW och för Klockarängsvägen-byggnader 20 kW. Med hänsyn till fastighetens termiska tröghet är Pärllöken utan tvekan vinnaren på grund av betong som väggsmaterial, högre termisk massa, balanserad ventilation, värmeåtervinningssystem och högre energiklass på fönsterglasen. Ovanstående skäl gör att Pärllökens termiska tidskonstant är minst tre gånger längre innan temperaturen når det lägsta börvärdet på 18°C, jämfört med Klockarängsvägen. Detta ger att Pärllöken har en högre förskjutningskapacitet av värme på 75 kWh jämfört med Klockarängsvägens maximala förskjutningskapacitet på 20 kWh. I en ekonomisk analys, baserat på författarens framtagna energimodeller, beaktas två styrstrategier i Pärllöken. Den ekonomiska analysen fokuserar på vintersäsongen från oktober till mars. Alternativ 1 driver värmepumpen med partiell kapacitet enligt reglerbar effekt. Alternativ 2 stänger av värmepumpen helt. Under vintersäsongen sparar Pärllöken 1 646 SEK med Alternativ 1 och 2 273 SEK med Alternativ 2. Klockarängsvägen använder sig endast av Alternativ 1 för en ekonomisk analys, vilket resulterar i en kostnadsbesparing på 20 948 SEK. En förstudie med värmepump i kombination med andra förnybara tekniker så som solceller på Klockarängsvägen genomförs för att undersöka potentialen av energibesparing. Kombinationen ger dock inte en positiv effekt på grund av den låga solinstrålningen under vintertid.
Liu, Lei. "Investment planning under daily operation: A sustainable housing community context". Thesis, Queensland University of Technology, 2018. https://eprints.qut.edu.au/123736/2/Lei_Liu_Thesis.pdf.
Texto completoRitz, Carolina y Malin Mattsson-Mårn. "Utformningens betydelse för energiförbrukningen : En fallstudie av verksamhetsbyggnader". Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Byggnadsteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-28281.
Texto completoIrffi, Guilherme Diniz. "PrevisÃo da demanda de energia elÃtrica para o nordeste utilizando OLS dinÃmico e mudanÃa de regime". Universidade Federal do CearÃ, 2007. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=1405.
Texto completoEsse estudo se propÃe estimar a demanda por energia elÃtrica para as classes residencial, comercial e industrial na regiÃo Nordeste do Brasil, no perÃodo de 1970 a 2003. Utilizando as metodologias desenvolvidas por Stock e Watson (1993) e Gregory e Hansen (1996), respectivamente, DOLS e MudanÃa de Regime para obter as elasticidades-preÃo e renda de longo prazo. A partir dos vetores de cointegraÃÃo sÃo estimados os Modelos de CorreÃÃes de Erros, os quais fornecem a base para se fazer previsÃes de longo prazo, no perÃodo de 2004 a 2010. A partir dos resultados apresentados por este estudo, sÃo feitas comparaÃÃes das elasticidades-preÃo e renda de curto e longo prazo com demais estudos para o Brasil, bem como para as previsÃes feitas pela EletrobrÃs e por Siqueira, Cordeiro Jr. e Castelar (2006). As metodologias utilizadas nesse estudo, apresentam previsÃes mais acuradas do que os demais estudos para os anos de 2004 a 2006.
The objective of this research is to estimate the residential, commercial and industrial demand for electric energy in the Northeast region of Brazil during the period of 1970 2003. Two different methodologies were used to compute the price and income elasticity of demand: i) DOLS, proposed by Stock and Watson (1993); and ii) Regime Switching by Gregory and Hansen (1996). Error Correction Models are estimated from the cointegration vectors. These models are used to perform long-run forecasts of the electricity demand for the period 2004- 2010. The results are then compared to those from other researches about Brazilianâs price and income elasticity of demand for electric energy. Furthermore, the computed forecasts are compared to those from EletrobrÃs and from Siqueira, Cordeiro Jr. e Castelar (2006). The methodologies used in this work present forecasts that are more accurate than those ones from nother works for the period 2004-2006.
Strengers, Yolande Amy-Adeline y Yolande strengers@rmit edu au. "Bridging the divide between resource management and everyday life: smart metering, comfort and cleanliness". RMIT University. Global Studies, Social Science and Planning, 2010. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20100329.165839.
Texto completoHöglund, Marcus y Anton Stenås. "Komfort- och energianalys vid installation av markiser på Högskolans i Gävle glasfasader : Mätningar och IDA ICE-simuleringar". Thesis, Högskolan i Gävle, Energisystem och byggnadsteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-36108.
Texto completoThe University of Gävle plans to install solar shading awnings on the southern glass facades of the main entrances. Since construction, the main entrances Rävhallen and Fårhallen have suffered from poor thermal indoor comfort due to heat leakage and overheating due to the windows on the facades. This thesis was done in order to map and investigate the thermal indoor comfort in the University of Gävle's main entrances. The work also aimed to simulate and analyze annual energy consumption and thermal indoor comfort before and after the installation of solar shading awnings on the building's glass facades, in the simulation program IDA ICE. A comfort survey was conducted by measuring thermal comfort and indoor temperature ranges on two occasions in April. The measurements were made during a cloudy day and a sunny day at the same outdoor temperature, to investigate the effect of solar radiation on the building's thermal comfort and indoor temperatures. The comfort survey showed that the thermal comfort in Rävhallen and Fårhallen was insufficient as overheating occurs at high solar radiation. Data necessary for modeling and simulation was collected through observations, estimates, and dialogs with operating technicians from Akademiska hus. After data collection, a model was constructed in the simulation program IDA ICE. Before simulation, the model was validated using previously measured temperatures during the month of April. Then the building's energy consumption and thermal indoor comfort were simulated over a whole year, without awnings, and with awnings. The results showed that the thermal comfort was significantly improved by the awnings installations. High peak temperatures that previously occurred in the building decreased because of the reduced solar radiation through the glass facade. The total annual energy demand increased from 605 MWh to 635 MWh. However, the annual energy demand for cooling decreased from 3,4 MWh to 3,2 MWh. The increase in energy consumption was due to the awnings reducing useful heat from solar radiation, especially during the heating season. Prior to further research, a more efficient control technique of the awnings and a more detailed model to improve the simulation results are proposed. When applying better adapted control of the awnings, the energy saving potential is considered to be greater. It was concluded that awnings can significantly improve indoor thermal comfort, but that energy consumption may increase depending on control technology.
Santo, Luca. "AA-CAES physical modelling: integration of a 1D TES code and plant performance analysis". Thesis, Uppsala universitet, Tillämpad kärnfysik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-360448.
Texto completoPospíšil, David. "Zvýšení tepelně-izolačních parametrů klasických obytných budov a jejich vliv na kvalitu vnitřního prostředí". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229922.
Texto completoFaramarzi, Ghazal y Malin Torestam. "Development of evaluation tools as an approach to pre-design district energy systems : Qualitative modeling and performance simulation using OpenModelica". Thesis, KTH, Energiteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-288104.
Texto completoStäder och stadsdelar står för en stor del av totala energikonsumtionen i Sverige. Bostads- och servicesektor stod för ungefär 40% av totala energikonsumtionen under 2018. Den ökande urbaniseringen lägger också mer vikt vid energiproduktion, distribution och konsumtionen i dessa områden. Ett alternativ för planering av energisystem i urbana områden är att ha integrerade energisystem där synergier mellan olika teknologier och energibärare kan utnyttjas. Den typen av system skulle kunna öka flexibiliteten i energisystemet och därför förenkla integrering av oförutsägbara förnybara energikällor. Syftet med denna studie var att föreslå verktyg för planering av energisystem i stadsdelar. Detta gjordes genom en litteraturstudie angående utformningen av olika energisystem samt identifiera hinder och möjligheter för att integrera olika produktions- och distributions teknologier. Fokus låg på systemen för värme, kyla och elektricitet. Det föreslagna verktygen är tre Excel baserade moduler. Den första modulen är en qualitative modell som presenterar de studerade teknologier och deras kopplingar. Den innehåller också synergier mellan de olika energibärarna och konsumtions- och produktionssektorn. Den andra modulen är en qualitative modell, men relaterad till marknad mekanismer, juridiska, organisatoriska och institutionella aspekter. Den tredje modulen är en tabell som beskriver hinder och möjligheter för några av teknologierna. Utöver det de relevanta aktörerna identifierades. För värme-, kyla- och elektricitet marknaden är de fjärrvärmeföretagen, fastighetsägare, samfälligheter, kommuner, fjärrkyla företagen, solcells ägare. De föreslagna verktyget kan användas för planering av energisystem i ett första skede när teknologier ska väljas. En fallstudie genomfördes för att visa hur det föreslagna verktyget kan användas. Fallstudien en stadsdel som planeras i Stockholm, Sverige. För att genomföra en analys behövdes en modell för ett hypotetiskt värmesystem. Två modeller utvecklades för värmesystemet genom att använda modelleringsmiljön OpenModelica. Det huvudsakliga målet med fallstudien var att jämföra den teknoekonomiska- och miljöinriktade prestandan för olika scenarierna. Tre olika scenarier övervägdes för att täcka totala värmebehovet i stadsdelen. I det första scenariot täcks det totala värmebehovet endast av lokala värmepumpar. I andra scenariot täcks värmebehovet för uppvärmning av värmepump(ar) kopplade till en värmelagrings komponent (ackumulatortank). En elpanna användes för reserveffekt. I tredje scenariot är elpannan ersatt av fjärrvärme. En känslighetsanalys var utförd för olika antal värmepumpar kopplade till olika storlekar av värmelagrings-komponenten i de två sista scenarierna. De ekonomiska och miljörelaterade resultatet i den här studien är starkt beroende av antaganden gällande priser och utsläppsfaktorer. Resultatet indikerar att det tredje scenariot har de lägsta CO2 utsläppen. Ökad värmelagringsstorlek bidrar till att värmepumpen förbrukar mer elektricitet och därför ökar de relaterade utsläppen. Däremot beror de totala utsläppen i systemet på vilken reservkraft som används. För dessa resultat användes utsläppsfaktorn för svensk elmix samt utsläppsfaktorn från ett fjärrvärme företag i Stockholm. Den billigaste alternativet gällande årlig driftsenergikostnad är det första scenariot med endast värmepumpar. Däremot, bland de scenarion som innehåller värmelagring, har det andra scenariot med tre värmepumpar och 100m3 stor värmelagringsenhet den lägsta kostnaden. Detta system är endast 0.6% dyrare än det första scenariot. För energipriser har timvärden från Nordpol antagits för elektricitet och för värme har normalprislistan från ett fjärrvärmebolag i Stockholm antagits. Angående den tekniska systemprestandan, indikerar resultatet att bidraget från värmelagringsenheten som den är modellerad i den här fallstudien inte är signifikant på årsbasis. Det observeras emellertid att en större värmelagringsenhet täcker en större andel av effektbehovet under de timmar som enheten används.
Larmérus, Alexander. "Styrning av värmesystem i kontorsbyggnader : Jämförelse mellan prognosstyrning, styrning som utnyttjar byggnadens värmetröghet, samt traditionell styrning". Thesis, KTH, Tillämpad termodynamik och kylteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-146975.
Texto completoBarbosa, Renato Mariano. "Contribuição dos créditos de carbono na viabilidade de projetos de eficiência energética térmica e de troca de combustíveis em cervejarias". Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/86/86131/tde-13092011-161409/.
Texto completoNowadays it´s quite complex to solve the problem between energy demand growth and the human activities, which have negative, widespread effects on the global climate. In this sense, apart from the fact that Brazil adopts massivelythe hydropower, there is a large potential for the use of renewable energy sources, as biomass. In process industries, techologies for reducing thermal energy consumption associated with the use of the sustainable biomass and biogas from wastewater treatment systems can be one among other solutions for equalizing the energy-environment dilemma, also targeting the prorrogatives of the current global policies on safety and sustainable energy sypply. Anyway, such measures have still been left aside by many industries, because it´s still not properly understood regarding the way these projects can internilize their positive externalities, some enterprises keep distant from the social, economic and environmental beneffits that carbon credit projects can bring up to help them in succeeding and rationalizing energy consumption. This dissertation evaluates and assesses the economic viablitity of projects of fuel switch (from fossil fuels to renewable biomass); use of biogas from industrial wastewater treatment systems and also the implementation of technologies and processes for reducing steam comsumption, focusing on breweries. By means of economic sceneries, it´s shown that the revenues from carbon credits can significantly have positive impacts, while financial incentives, on the decision making process towards the carrying and dissemination of such projects. As demonstrated in this work, the RCE, if required in the sceneries analysed, can bring the cash flows whithin brewery IRR expectations. Hence, the model showed that when measures of energy afficiency achieve at least 5,0% with the price of energy saved is of at least R$187,50/MWh, and for measures above 10% and energy is bought at prices higher then R$ 122,50/MWh, all projects with CER prices above 5,00 viable, and can be conducted. Also, the revenues from carbon credits can make industries wake up for the fact that they can internalize the positive externalities of these projects, once the high investiments can be compensated by their carbon offsets.
Šot, Petr. "Ověření tepelně-izolační vlastnosti termoreflexních fóliových izolací". Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226729.
Texto completoDabdoubi, Saida. "La maîtrise de la demande énergétique dans le secteur du bâtiment au Maroc : quels enjeux économiques et environnementaux". Thesis, Bourgogne Franche-Comté, 2019. http://www.theses.fr/2019UBFCC021.
Texto completoIn Morocco, the energy sector is characterized by the weakness of national resources in fossil fuels and a strong dependence on energy supplies from the rest of the world. At the same time, demand for primary energy has grown rapidly in the last two decades and is expected to continue in the future. As a result, controlling energy demand, through the implementation of the national energy efficiency program and its deployment in all economic sectors, is one of the priority areas of its energy policy. In the building sector (residential and tertiary), this program focuses on the implementation of public policy instruments aimed at encouraging users to invest in energy efficiency and renewable energy solutions and adopt a sober and fight against waste. The aim of this thesis is to assess the effectiveness of energy demand management policy instruments in the building sector. The approach adopted is to combine the two dimensions of the ex-post evaluation of public action: 1) the normative dimension to assess the effectiveness of the measures implemented; 2) the instrumental dimension, which aims to understand the results obtained and to identify areas for improvement.The question is, in fact, to see if the regulatory and incentive mechanisms applied in Morocco allow to circumvent all the barriers to investment in the actions of the control of the energy demand in the building sector. It turns out that there is a lack of adoption of energy efficiency solutions and renewable energy from users and that the various instruments implemented can not be enough to reduce it. First, some barriers are not lifted because no appropriate tool exists (the case of the thermal renovation of existing buildings). Then, some blocking factors are only partially addressed because the practical use of the tools differs from their theoretical design. Finally, the energy control policy is most of the time thwarted and neutralized by other public housing policies or the inability of public authorities to mobilize the various stakeholders in the act of building.This research work attempts to answer a number of questions: Is the implementation of a policy to control energy demand in Morocco justified given that per capita energy consumption is very low compared to the world average? What does this policy consist of? How does it benefit the country and its citizens? What are the economic instruments used by the public authorities to encourage users to control their energy consumption and thus to achieve the targets for reducing demand? After several years of implementation, what is the assessment of these objectives? What impact evaluation of these economic instruments can be done? Moreover, what are the barriers that limit public action to reduce energy consumption in the building sector?The development of a massive thermal renovation program for public buildings is likely to contribute to achieving the objectives set by the authorities in terms of controlling energy demand and reducing greenhouse gas emissions. Because of its importance and the effects of5positive training that it can induce, the public built park represents a considerable energy stake. It deserves, therefore, to be the object of deep actions in favor of saving energy. The development of this program also responds to the duty of exemplarity that the public authorities must demonstrate
Hammarström, Anton. "Utvärdering av potential för värmeåtervinning från laborationsutrustning : Möjligheten att använda en kylvattenbassäng som termiskt säsongslager". Thesis, Mittuniversitetet, Avdelningen för kemiteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-34309.
Texto completoHETA Education in Härnösand has a steam power plant for educational purposes which is cooled with water from a 329 m³ underground basin. The purpose of this thesis has been to examine how the basin with the waste heat can be used as seasonal thermal energy storage with an existing 7.8 kW heat pump in order to heat the machine room of their lab building. A spreadsheet was created in Microsoft Excel in order to carry out the calculations. As no measurement data was available, a simulated scenario was created based on temperature statistics and the operating schedule for the power plant from the year 2017. Transmission losses were calculated for the basin and the machine room. For the basin, mostly observational data and knowledge among the staff were used, while the insulation for the machine room mainly had to be estimated based on the construction year. The result was that the heat pump, with the current operating schedule, could cover around 45% of the yearly heating demand of the machine room. Of the 276 GJ that were added through cooling of the power plant during a year, according to calculations, only 2,7% could be used for heating the machine hall, due to lacking insulation in the basin. The greatest limitations for achieving a higher heating coverage and a greater usage of the waste heat were assessed to be the placement in time of the power plant runs, and the effect of the heat pump. If the runs would be placed mainly in November–April, and the heat pump replaced with a 10 kW one, around 74% of the heating demand could be covered and 18 % of the waste heat used. Other things, such as increased insulation in the basin and larger water volume were also assessed to be able to increase the capacity of the basin as heat storage.
Saulich, Sven. "Generic design and investigation of solar cooling systems". Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/13627.
Texto completoYu, Kuan-Chieh y 余冠頡. "Application of data mining technology in energy demand forecast". Thesis, 2017. http://ndltd.ncl.edu.tw/handle/67w4t8.
Texto completo國立勤益科技大學
工業工程與管理系
105
Energy is important for a country’s development. If there isn’t enough energy, all aspects of development will be subject to certain restrictions. The forecast of energy demand will be the indicators of the impact of decision-making. If the supply of energy is lower than the needs, there may be a power outage. On the other hand, it will lead to idle power, resulting in unnecessary waste of economic resources. In this study, using the K-means clustering algorithm and the Fuzzy C means clustering algorithm in the data mining to cluster the data in advance, in order to adjust the "effective lengths of intervals" in the Adaptive Neural-Network-Based Fuzzy Interference System(ANFIS) to improve the establishment of its fuzzy rule base. Based on Taiwan's population, Gross Domestic Product, total imports and export value from 1974 to 2015, this study uses K-means and Fuzzy C means with ANFIS to forecast the energy demand. In order to understand the accuracy of the model, this study is compared with other energy prediction studies, and the forecast is better than other’s. The results of this study, the RMSE and MAPE of the ANFIS with K-means were 1.548E +10 and 10.06%. The RMSE and MAPE of the ANFIS with Fuzzy C means were 1.553E + 10 and 10.36%. According to the results, clustering the data in advance can really solve the ANFIS fuzzy model "effective lengths of intervals" problem, and the accuracy has also increased. In addition, in the efficiency of model convergence, this study uses the data of the iterative situation to compare and finds that using the K-means with ANFIS would make the model more quickly into a stable state.